.study {
  .title {
    color: #666666;
    font-size: 12px;
    font-weight: normal;
  }
  .course_info {
    margin-bottom: 25px;
    .course_item {
      flex: 1;
      .num {
        font-weight: bold;
        color: #202020;
        font-size: 18px;
        margin-top: 10px;
      }
    }
  }
  .study_long {
    border-radius: 5px;
    background: #f8f8f8;
    padding: 20px 15px;
    .duration {
      font-weight: bold;
      color: #202020;
      font-size: 24px;
    }
  }
}
